Update module r3labs/diff/v2 to v2.12.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
r3labs/diff/v2	require	minor	v2.10.0 -> v2.12.0

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Release Notes

r3labs/diff

### [`v2.12.0`](https://togithub.com/r3labs/diff/compare/v2.11.0...v2.12.0) [Compare Source](https://togithub.com/r3labs/diff/compare/v2.11.0...v2.12.0) ### [`v2.11.0`](https://togithub.com/r3labs/diff/compare/v2.10.0...v2.11.0) [Compare Source](https://togithub.com/r3labs/diff/compare/v2.10.0...v2.11.0)

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[coveralls]

Pull Request Test Coverage Report for Build 555598216

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 86.594%

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Totals
Change from base Build 535582663:	0.0%
Covered Lines:	239
Relevant Lines:	276

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💛 - Coveralls